APA (7th ed.) Citation

Ravenna, F., Feo, C., Calia, N., Avoscan, C., Barbetta, C., & Cavallesco, G. N. Retrograde Instillation of Methylene Blue in the Difficult Diagnosis of BPF. Wiley.

Chicago Style (17th ed.) Citation

Ravenna, F., C. Feo, N. Calia, C. Avoscan, C. Barbetta, and G. N. Cavallesco. Retrograde Instillation of Methylene Blue in the Difficult Diagnosis of BPF. Wiley.

MLA (9th ed.) Citation

Ravenna, F., et al. Retrograde Instillation of Methylene Blue in the Difficult Diagnosis of BPF. Wiley.